Refrigerator.



F. V. DETWILER.

REFRIGERATOR.

APPLICATION FILED MAY 31. 1910.

Patented Jan. 5, 1915.

4 SHEBTSSHEET 1.

F. V. DETWILER.

REPRIGERATOR.

APPLICATION FILED MAY 31, 1910.

Patented Jan. 5, 1915.

4 SHEETS-SHEET 2.

l l l I I I n l fri... ||li F. V. DETWILER.

REPRIGBRATOR.

APPLICATION HLBD MAY 31,1910.

Patented Jan. 5, 1915.

4 SHEETS-SHEET 3.

F. V. DETWILBR.

REFRIGERATOR.

APPLICATION FILED MAY 31,1910.

Patented Jan. 5, 1915.

4 SHEETS-SHEET 4.

rasees -v- Demme 0F immessa.. umore Bauwens@ Speclcatiqn 'of Letters Patent Patented Jar .5.. 1915,.

#Presman #ed Hay 3,1, 191% Smell N- wenn To all lwhom it may concern;

.e it known that I, Fon fr V, a citizen of the United States, residing 1n Chicago, in the 'county of .Cook and State of Illinois, have invented certain new and Improvements Refrigerators. of which the followin is a specification.

This invention re etes to improvements 1n refrigerators and one of the objects of the saine is to provide a hollow cooling casing with which the city supply of Water or ice may be used as a cooling medium and which casing is removably and centrally disposed within an inclosng casing whereby provision receptacles may be arranged on each side thereof in such a manner that cold air discharged from the cooling casin will enter both of the provision receptac es to circulate therethrough.

A further object is to provide improved means for holding or retaining the cooling casing in position and improved means for supporting a screen to prevent the entrance of foreign matters into the cooling casing.

A .further object is to.provide improved means whereby the city supply of water may be discharged into the cooling casing and improved means whereby the casing may be readily drained.

A further object is to provide improved means whereby the provision receptacles may be detachably connected, and improved means whereby the provision receptacles may be readily removed from the inclosing casing and independently with respect t0 the cooling casing.

' A further object is to rovide an improved structure of this' caracter which will. be simple, durable and cheap in construction and effective" and efficient in operation. 1

To the `attainment of these ends and the accomplishment of other new and useful cbjects, as will appear, the invention consists in the features of novelty in the construction, combination and arrangement of the several parts hereinafterV more fully described and claimed and shown in the accompanying drawings illustratingthe embodiment of the invention, and in which- Figure 1 is a vertical transverse sectional view of an improved refrigerator of` this character constructed in accordance with the principles of this invention. Fig. 2 is 'a front elevation of the outside of the casing showing the arrangement of the doors. Fig. 3

is a lxoriaontal sectional View on line 3--3 of Fig. 1. Fig. Llis a, detail -perspective view p of one of the food provisipn receptacles. Fig. is an enlarged detail `{liew partly in elgvatxon and part y in section showing the braces for supporting the walls of the cooland ,for spacing he provision receptac roni' the wall o the casing. Fig. 6 is a etail perspective view of a portion of the screen or giard for preventing the entrance of foreign matters into the cooling casing, and the support therefor. F 7 is an enlarged detail sectional view showing the manner of supporting the supply pipes which discharge into the coolng casing when the city supply of water is used as a cooling medium. Fig. 8 is a view similar to Fig. 1 of another form of refrigerator. Fig. 9 is a front elevation of the casing of thc refrigerator shown in Fig. 8 illustrating the arrangement of the doors of the refrigerator. Fig. 10 is a horizontal sectional view on line 10-10 of Fig. 8 showing the manner in which the provision receptacles on each side of the cooling casing may be connected. Fig. ,11 is a detail perspective view of the form of cooling casing shown in Fig. 8v. Fig. 12 is a perspective view ofthe connecting plate or AI nemler between the provision receptacles shown in Fig. 13. Fig. 13 is a detail perspective view of the provision receptacles shown in Fig. l0 and the connecting member therefor, removed from the outer casing.

Refer `ing more particularly to the drawings' an in the present exemplification of Athe inve tion, the numeral 15 designates an inclosin casing having insulated walls and which may be of the ordinary and well known construction but in the present exelnplification of the invention is shown as being of a rectangular construction.

Arranged within the inclosing casing and disposed centrally thereof is a hollow cooling casing which in the form of the invention shown in Figs. l, 3 and 7 comprises an outer wall 16 and an inner wall17, the walls 16 and 17 being spaced from each other and their ends being connected as at 18 to form a tubular air passage surrounded by the cooling medium 19` which cooling niedium is in the form of a liquid. preferabliwater. The cooling casing thus formed is a'is'o preferablv of a rectangular construction and mav be of anv desired height but is of a height to extend from the bottom 4of the inclosing casing and terminate some distancev from the top of the casing.

In order to strengthen or reinforce the walls 16, 17 of the cooling casing, braces or spacing members -20 may be provided which may be of any desired construction and any number of which may be provided. 'l'hese braces or spacing members are arranged within the cooling casing between the walls 17 and the. respective adjacent walls 16 and may be secured and held in popreferably .by mgans, ofuoneieni th mg reduce land..u the walls-of die-cooling casing in end being redacd tisanes to projectt sition in any desired'or suitablelmannerg.

and beyond the other wall of the cooling casing. Attached to this extremity 22 of thel member 20 is a cap 23 which is arranged adjacent the outer face of the respective wall of the cooling casing and extends for a short distance beyond theface of the wall for spacers as hereinafter set forth.

Arranged within the inclosing casing 15 andabore the cooling casing is a tray 24, which is of a configuration to conform to the interior of the inclosing casing. 'I`his tray 24 is provided with an inclined bottom,as shown, and the opposite edges are provided with upwardly projecting flanges 25. The tray is formed with an elongated opening adja cent its center, preferably formed by cutting away a portion o f the tray and bending the cut-away portion back upon itself as at 26, shown` more clearly in Fig. 6, and this portion 26 is spaced from the lower face ofthe bottom of the tray. The portion of the bottom adjacent the bent or deflected portion 26 is offset or depressed as at 27 for a purpose to be set forth.

The upper edges of the outer walls 16 of the cooling casing, in the form shown in Fig. 1 extend beyond the upper edges of the inner walls 17, and the edges of these walls are deflected or bent outwardly as at 28, and then inwardly, as at 29, Ato form a lip or recess adapted to receive the deflected portion 26 of the bottom of the tray so that the cooling casing may be readily detached from the tray and removed from the inclosing casing when the front thereof is detached and may as readily be replaced when desired.

The tray 24 maybe supported within the inclosing casing in any suitable manner, preferably by means of brackets 30 which are secured to the walls of the inclosing casing and the side edges of the tray terminate some distance short of the walls of the inclosing casing. Uprights 3l are provided which are supported in any desired or suitable manner to formsubstantial continuations of the flanges 25 of the tray and these uprights 31 are also spaced from`the adjacent walls of the inclosing casing and of the uprights 31 to'h formpassa e d f terminate short of the top thereof to form` with the adjacent wall of the casing upgoing air circulation passages and over the top of which uprights the air is discharged into the ice receiving chamber. A rack 33 is provided which extends across the tray 24 and is supported by the tray, and a platform or support 34 forms a portion of the rack and upon this platform or support 34 the ice 35 rests. This platform or support 34 preferably terminates some ldistance short ilu open through the bottom of the cooler and the cooler may be supported by a suitable rack or support 36 arranged in the bottom of the inclosing casing and in such a manner as to hold the bottom of the cooling casing or cooler above the bottom of the inclosing casing. l

Arranged on each side of the cooling casing is a provision receptacle designated generally by the reference numeral 37 and which may be constructed of any suitable material, such as porcelain', metal or the like, and is held spaced from the cooling casing by the caps 23. Shelves 38 are arranged within the provision receptacles and these shelves may be provided with the ordinary openings or perforations to permit the air to circulate through the receptacles. Y

Each of the provision receptacles 37 is lar passage formed. by the walls 117, 18, ,of the cooling casing. The tubular passage Aformed by the walls 17 and 18 of the cooler loo provided with one or more openings 39 adjacent the bottom thereof and the receptacles are so arranged that the walls which are provided with the openings 39 will sta-nd in proximity to the cooling casing, the openings 39 being preferably arranged below the bottom of the cooling casing. These provision receptacles are also each provided with an opening 40 in the top thereof and these openings are preferably arranged adjacent the side wall of the provision receptacle opposite to that in which the openings 39 are arranged. Vhen the provision receptacles are arranged within the inclosing casing, the cap 23 of the spacing members 20 will hold the adjacent walls of the provision receptacles spaced from the cooling casing. An overflow pipe 41 is provided for controlling the height of the waterf19 in the cooling casing.

In the form of the invention as shown in Fig. 1, the cooling casing is supplied with the cooling medium or water from the ice As the ice melts, the Water will run down into the tray 24 and from the tray will be'discharged into the cooling casing, the height thereof being controlled by the overflow pipe 41. In order to prevent the en-A trance of any foreign matter in the cooling casing, a guard preferably in the form of a screen 42, is provided and this screen is provided with a frame 43, a portion 44 of which is bent or deflected upwardly as shown in Fig. 6 and the extremity of the portion 44 is bent or deflected laterally as at 45. When the guard or screen 42 is placed in position so as to extend across the open top of the cooling casing and across the tubular passage formed by the walls 17 and 18 and also across the overflow pipe 36, the deflected portion 45 of the frame will rest in the recess or depressed portion 27 of the tray, while the upright portions 44 of the frame will engage the edges of the elongated openings formed in the bottom of the tray to hold the guard or screen against displacement. A drip pan 46 is arranged in the bottom of the inclosing casing to receive the water from the overflow pipe 36 and an outlet pipe 47 is connected with the drip pan by means of which the Water may be discharged into the sewer pipe. It will be apparent that the cold air from the ice will be discharged into the tubular passage formed by the walls 17 and 18 of the cooling casing A and will be discharged through the bottom thereof to enter the provision receptacles through the openings 39. It will then circulate upwardly in the direction of the arrows to pass out of. the receptacles through the openings 40 and will enter the up-going air circulation passages 32 to be discharged over the partitions or uprights 31 back into the ice chamber. As the water accumulates in the cooling casing it will overflow through the pipe 41 which latter may be provided with openings 48 provided for that purpose, and will be discharged into the drip pan 46 to flow out of the pipe 47. A drain cock 49 is provided in the bottom of the cooling casing by means of which the latter may be readily drained of water when desired. The front 50 of the inclosing casing is removably secured in position by means of suitablefastening devices 51 such as screws or the like, so that the entire front may be removed when it is desired to remove the provision receptacles and` also the cooling casing. The front is provided with closures 52 by means of which access may be had to the ice compartment and closures 53, one of which isv provided for each of the provision receptacles. A supplemental door or closure 54 may be provided in the front 50 through which access may be had to the drain cock 49.

When it is desired to use the city supply of water as a cooling medium, one or more pipes 55 (shown more clearly in Fig. 7l may be provided and these pipes are preferably provided with nozzles 56 and are supported by means of suitable brackets 57 which preferably removably engage over the top edges of the walls 17 so that the pipes may be removably supported in position. The nozzles 56 are preferably arranged so that water discharged therefrom will be directed against the outer face of the walls 17 and into the cooling casing. The pipes 55 receive their supply by means of a suitable supply pipe 58 which extends through one of the walls of the casing.

In the form of the invention shown in Figs. 8 to 13, the cooling casing comprises a hollow base 59, projecting from and communicating with which are a plurality of spaced tubular members 60. These tubular members 60 may be of any desired height and supported thereby and communicating therewith is a tank 60 Which is open at the top. Arranged within each of the tubular members 60 is an air pipe or tube 62, one end of which has communication with the air in the inclosing casing through the bottom of the hollow base 59 as shown in Fig. 8. The other end of these pipes 62 project for some distance above the bottom of the tank 61. These pipes 62 are of a diameter somewhat smaller than the interior diameter of the tubular members 60 so that when the cooling casing or cooler is filled with Water, the air pipes 62 will be completely surrounded by Water, as shown in Fig. 8. An overflow pipe 63 similar to the overflow pipe 41 is provided and a drain cock 64, similar to the drain cock 49, is provided. The tray 65 is provided with an inclined bottom and an opening at the center thereof surrounded by adepending flange 66 and this flange 66 projects into the tank 61 for a short distance so as to direct the Water from the ice into thecasing. A rack 67 and a support 68 similar to the rack and support 33, 34, are

also provided and upon which the ice rests. f

A circumferential flange 69 is provided on the tray 65 and uprights or partitions 70 are arranged to surround the flange to form lip-going air circulation passages 71 similar to the passages 32 and brackets 72 are also provided for supporting the tray and the uprights. Brackets 73 are provided within the flange 66 and a guard or screen 74 is supported by these brackets 73 to prevent the entrance of foreign matter into the cooling casing or cooler.` Provision receptacles 75 are provided on each side of the cooling casing'and the walls 76 thereof engage and rest against the side of the tank 61 and the side of the hollow base 59. These walls 76 are provided with openings 77 similar to the openings 39 through which the cold air discharged from the cooler enters the food re- ,of Water as the coolin front edges of the walls 76 are bent or delected back upon themselves to form l1ps 79 spaced from the adjacent faces of the walls 76 to form grooves openmg outwardly. A connecting member 8 0 preferably in the form of metal 1s provlded wlth spaced parallel fianges 81 extending substantially the entire length thereof. This member 80 is of a width equal to the space between the walls 76 and the flanges 81 thereof are adapted to enter the groove formed by the lips 79 to connect the rovision receptacles and also to form a shle d or protector, extending across the end of the cooling casin and also to form a closure for the space etween the receptacles. This member 80 is provided with openings 83 b means of which it may be readily detache In this form of the invention, the front 84 of the casing is provided with an opemng closed by a single closure 85 and this opening is of such a size that when opened, the

provision receptacles may be readily andl bodily removed from the inclosing casing as well as the cooling casing or cooler. Vhen it is desired to remove either the provision receptacles or the cooling casing the member 80 is iirst detached and either the provision receptacles or the cooling casing, or both, may be removed from the inclosing casing at will. The front 84 of the refrigerator is also provided with closures 86 inclosing openings through which access may be had to the ice compartment. In this form of the invention when it is desired to drain the cooling casing, the closure 85 is first opened and the member 80 then removed' which may be readily accomplished after which access may be had to the cock 77.

When it is desired to use the cit supply medium, t e water is supplied to the coo ing casing, through the pipe 87 which extends through one of the walls of the casing and rests upon the bottom of the tank 61 so as to discharge into the tubular members 60.

If desired, spacing members 88 may be provided which engage the walls 76 and serve to hold the food receptacles in position. n

In order to reinforce the edges of the various metallic parts, the extremities of the edges may be deflected or bent back upon themselves in a manner similar to that shown at 89 in Fig. 7.

What is claimed as new isv 1. In a refrigerator, the combination of an inclosing casing, a removable hollow cooler the-rein dividing said casing into two compartments, said cooler having a source of supply of cooling liquid, provision receptacles in the compartments on each side of and independent of the cooler, said receptacles extending below the bottom of the cooler, and an air circulation passage through the cooler, one end of which discharges through the bottom of the cooler, the walls of the provision receptacles adjacent the cooler bemg provided with openings below the cooler through which the air discharged from the air passage will enter the receptacles to circulate therethrough.

2. In a refrigerator, the combination of an inclosin casing, a removable hollow cooler therein dividing said casing into two compartments, said cooler having a source of supply of cooling liquid, provision receptacles 1n the compartments on each side of and independent of the cooler, said receptacles extending below the bottom of the cooler, an air circulation passage through the cooler, one end of which discharges through the bottom of the cooler, the walls of the provision receptacles ad'acent the cooler vbein provided with openings below the cooler t rough which the air discharged from the air passage will enter the rece tacles to circulate therethrough, a dram opening for the cooler, and a stop cock within the inclosing casing and disposed in the space between the provisiomreceptacles for controlling the drain opening.

3. In a refrigerator, the combination of an inclosing casing, a removable hollow cooler therein dividing said casin into two compartments, said cooler havlng a source of supply of cooling liquid, provision receptacles in the com artments on each side of and independent o the cooler, a drain opening for the cooler, a stop cock within the mclosing casing and disposed in the space between the provision receptacles for controlling the opening, and means whereby access ma be Y had to the stop cock through the wall o the inclosing casing.

4. In a refrigerator, the combination of an inclosing casing, a hollow cooler having an open top and adapted to receive a cooling liquid, a drip receptacle within the casing and su ported above the cooler, said receptacle ischarging into the cooler, an air circulation passage extending through the cooler and surrounded by the liquid, a screen extending across' the cooler and through which the liquid passes into the cooler and provision receptacles below the drip recentacle and disposed on each side of the cool'w with one Wall adjacent the cooler.

5. In a refrigerator, the combination of an inclosing casin a hollow cooler having an open top an adapted to receive n. cooling liquid, a drip receptacle within the. casing and supported above the cooler, said receptacle discharging into the cooler, interengaging means on the receptacle and cooler for detachably securing the two together, an air circulation passage extending through the cooler and surrounded by the liquid, a. screen extending across the cooler and through which the liquid passes into the receptacleand provision receptacles below the drip receptacle and disposed on each side of the cooler with one wall adjacent the cooler.

6. In a refrigerator, the combination of an inclosing casing, a hollow cooler centrally disposed within the casing and dividing it into separate compartments, means for supporting the bottom of the cooler above the base of the casing, said cooler having a source of supply of coolin li uid, provision receptacles on each si e o the cooler and having openings in their walls through which the air from the cooler passes, a drain cock for the cooler leading from the bottom and entirely within the casing, one of the walls of the casing having an opening through which access may be had to the stop cock and a closure for the opening.

7. In a refrigeraton/the combination of an inclosing casing, a hollow cooler centrally disposed therein and having a source of supply of cooling fluid, provision receptacles arranged on each side of the cooler, a drain for the cooler embodying a stop cock leading from the bottom thereof, the walls of the receptacles being provided with openings adjacent the cooler, and means separate from the wall of the casing forming a closure for the space between the receptacles and extending thereacross for inclosing the cooler.

8. In a refrigerator, the combination of an inclosing casing, a hollow cooler centrally disposed therein and having a source of supply of cooling fluid, provision receptacles arranged on each side of the cooler, a drainy for the cooler embodying a stop cock leading from the bcttom thereof, the Walls of the receptacles being provided with openings adjacent the cooler, and means separate from the walls of the casing removably secured in position to form a closure for the space between the receptacles and extending thereacross for inclosing the cooler.

9. In a refrigerator, the combination of an inclosing casing, a hollow cooler centrally disposed therein and having a source of supply of cooling fluid, provision receptacles independent of and arranged on each side of the cooler, and a closure for the space between the receptacles detachably connected with adjacent walls of the receptacles.

10. In a refrigerator, the combination of an inclosing casing, a hollow cooler centrally disposed therein and having a source of supply of cooling fluid, provision receptacles independent of and arranged on each side of the cooler, a closure for the space between the receptacles detachably connected with adjacent walls of the receptacles, an air circulation passage extending through the cooler, and means whereby the air dis- -charged from the cooler will enter the provision receptacles 11. In a refrigerator, the combination of an inclosing casing, a hollow coolercentrally disposed therein and having a source of supply of cooling fluid, an air circulation passage through the cooler, provision receptacles on opposite sides of the cooler, means whereby the air discharged through the cooler will enter the receptacles, portions of adjacent walls of the receptacles being sha ed to form fastenin s and a member detac ably engaging the astenings and extending across the space between the receptacles and infront of the end of the cooler.

. 12. In a refrigerator, the combination of an inclosing casing, a hollow cooler centrally disposed therein and having a source of supply of cooling fluid, an air circulation passage through the cooler, provision receptacles on opposite sides of the cooler, means whereby the air discharged through the cooler will enter the receptacles, portions of adjacent walls of the receptacles being shaped to form grooves extending lengthwise of the edges of the walls, and a member extending across the space between the receptacles to form a closure therefor, said member being provided with portions adapted to removablv enter the grooves.

13. In a refrigerator, the combination of an inclosing casing, a hollow cooler centrally disposed therein and having a source of supply of cooling fluid, an air circulation passage through the cooler, provision receptacles on opposite sides of the cooler, means whereby the air discharged through the cooler will enter the receptacles. portions of adjacent walls of the receptacles being shaped to form grooves 4extending lengthwise of the edges of the walls, a member extending across the space between the receptacles to form a closure therefor, said member being provided with portions adapted to removably enter the grooves and being removable through the front of the inclosing casing.

14. In a refrigerator, the combination of an inclosing casing, a hollow cooler open at 'the top and arranged centrally therein, provision receptacles on opposite sides of the cooler, a drip receptacle provided with an opening in its bottom and having its bottom inclined toward said opening, a flange adjacent the opening, said flange having enga gement with the open top of the cooler to discharge the water therein, an air circulation opening passing through the cooler, and a screen removably supported by the receptacle and extending across the cooler.

15. In a refrigerator, the combination of an inclosing casing, a hollow cooler open at the top and arranged centrally therein, provision receptacles on opposite sides of the cooler, a drip receptacle provided with anopeningf in its bottom and having its the receptacle, said flanges bein bent back upon themselves to .form lips, t e ed s of the walls of the cooler adjacent said anges being shaped to form li adapted to engage with the first said lips for detachably secllring the drip receptacle and cooler toet er, g 17. In a refrigerator, the combination of an inclosing casing, a hollow cooler open at the top and arranged centrally therein provision receptacles on opposite sides of the cooler, a drip receptacle having an opening in its bottom, flanges on o posite sides of the' opening and extending elow the receptacle, said anges being bent back upon themselves to form lips,` the edges of the walls of the cooler adjacent said flanges being shaped to form lips adapted to engage with the first said lips for detachably securing the drip receptacle and cooler together, and a screen removably supported by the walls of the opening in the drip receptacle and extending across said opening.

118. In a refrigerator, the combination of an inclosin casing, a hollow cooler open at the top an arranged centrally therein, provision receptacles on opposite sides of the cooler, a drip receptacle having an opening in its bottom, flanges on opposite sides of the opening and extending below the receptacle, said flanges being bent back upon themselves to form lips, the edges of the Walls of the cooler adjacent said flanges being shaped to form lips adapted to engage `with the first said lips for detachably securing the drip receptacle and cooler together, a screen removably supported by the walls of the opening in the drip receptacle and extending across said opening, portions of the bottom of the dri receptacle being depressed or offset to orm recesses into which opposite edges of the screen are seated.

19. In a refrigerator, the combination of an inclosing casing, a hollow cooler therein, means for supplying the cooler with a coolingliquid embodying a supply pipe provided with outlets discharging into the cooler, and means for supporting the pipe, said means hav-ing detachable engagement with the cooler,

20. In a refrigerator, the combination ef mamen an; inclosing casing, a hollow cooler therein, means for supplying the cooler with a cooling liquid em dying a supply pipe provi Aed with outlets discharging into the cooler, and suspended means for .supporting the pipe, said means having detachable engagement with the cooler.

21. In a refrigerator, the combination of an inclosing casing, a hollow cooler therein` means for supplying the cooler with a cooling liquid embodymg a supply pipe provided with outlets discharging into the cooler, and brackets for supporting the pipe, said brackets detachably engaging over the edge of the cooler.

22. In a refrigerator, the combination of an inclosing casing, a hollow cooler therein, means for supplying the cooler with a cooling liquid embodying a supply pipe, a nozzle leading from the pipe, and means for supporting the pipe, said nozzle being disposed to discharge the liquid directly against the wall of the cooler.

23. In a refrigerator, the combination of an inclosing casing, a hollow cooler therein comprising a tube forming the inner Wall, means for supplying the cooler with a cooling liquid embodying a supply pipe, a nozzle leading from the pipe, brackets detachably engaging over the wall of the tube for removably lsupporting the pipe, and a discharge nozzle for the pipe, said nozzle being disposed to ldischarge the liquid directly against the inner wall of the cooler.

24. In a refrigerator, the combination of an inclosing casing, a hollow cooler therein, an air circulation tube within the cooler spaced from the walls thereof forming the inner wall of the cooler and surrounded by the cooling liquid, means for supplying the cooler with a cooling liquid embodying a pipe provided with one or more discharge nozzles, and a bracket for removably supporting the pipe, said bracket detachably engaging over the edge of one of the walls of the cooler.

25. In a refrigerator, tbe combination of an inclosing casing, a hollow cooler therein, an air circulation tube within the cooler spaced from the walls thereof forming the inner wall of the cooler and surrounded by the cooling liquid, means for supplying the cooler with a cooling liquid embodying a pipe provided with one or more discharge nozzles, and a bracket for removably supporting the pipe, said bracket detachably engaging over the edge of one of tbe walls of tbe cooler, said nozzles being disposed to discharge the liquid directly against the side wall of the cooler.

26. In a refrigerator, the combination of an inclosing casing, a hollow cooler therein, an air circulation tube within the cooler spaced from the walls thereof forming an inner wall of the cooler and surrounded by the cooling liquid, means for sup lying the cooler with a cooling liquid embodying a. pipe provided with one or more discharge nozzles, and a bracket for removably supporting the pipe, said bracket detnchably engaging over the edge of the air tube, said nozzles being inclined toward the face of the air tube to discharge the liquid directly against the said face of the tube.

In testimony whereof I have signed my 10 FOREST V. DETWILER.

Witnesses:

J. H. JocHUM, Jr., M. W. CANTWELL. 

